+ one on the walmart pump. I use mine occasionally. I simply cut the socket on and crimped on some alligators. I then clip it to the battery of any vehicle.

I just used it the other day as my house compressor died out and I needed to air up a tire. It took a few minutes and I was back on track.

I used it on my wifes car when we were on our honeymoon out west. I removed the wheel, plugged the tire, and pumped it up with the little walmart pump. All the work took under 30 minutes which included digging out the jack.